Bidirectional knee joint cavity injection stool

By installing an electric servo push rod and guide assembly on the injection stool, height adjustment and bidirectional use are achieved, solving the problems of lower back pain and low injection efficiency for medical staff, and improving the convenience and efficiency of intra-articular drug injection in the knee joint.

CN223831379UActive Publication Date: 2026-01-27ZHEJIANG UNIV
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Patent Information

Application Number
CN202520040926.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-08
Publication Date
2026-01-27
Estimated Expiration
2035-01-08

AI Technical Summary

Technical Problem

The existing injection stool has a fixed structure, which requires taller medical staff to bend over for a long time when injecting drugs into the knee joint cavity, and it cannot be used in both directions, affecting injection efficiency.

Method used

A bidirectional knee joint injection stool with an electric servo push rod and a guide assembly was designed. The seat height can be adjusted by the electric servo push rod, and the design of the guide assembly and pedals enables bidirectional use and foot support, simplifying the operation process for medical staff.

Benefits of technology

It effectively reduces lower back pain for medical staff, improves injection efficiency, and allows patients to sit on either side for intra-knee joint injections without requiring medical staff to adjust their position.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a bidirectional knee joint cavity injection stool which comprises a bottom plate, supporting legs are installed at the bottom end of the bottom plate, four supporting columns are installed at the top end of the bottom plate, installation cavities extending inwards are formed in the tops of the supporting columns, an electric servo push rod is installed at the position, between two baffles, of the top end of the bottom plate, and a seat cushion is installed at the top end of the electric servo push rod. Guide assemblies are mounted in the two mounting cavities located on the same side, and the use height of the seat can be adjusted through an arranged electric servo push rod, so that a tall medical worker does not need to excessively stoop to cause waist ache during injection; by arranging a pedal, the feet of the patient can be supported through the pedal when the feet cannot make contact with the surface of the bottom plate, and the patient can sit on the seat cushion from the left side of the bottom plate or the right side of the bottom plate according to the injection side of the affected limb; and therefore, medical staff can perform knee joint intracavity injection on a patient without adjusting the position of the medical staff, and the injection efficiency is effectively improved.
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Description

Technical Field

[0001] This utility model belongs to the field of injection stool technology, specifically relating to a bidirectional knee joint cavity injection stool. Background Technology

[0002] An injection stool is a stool on which medical staff can sit to facilitate injections for patients. For some patients who need intra-articular injections of medication into the knee joint, they need to sit on the injection stool while medical staff administer the injection. However, existing injection stools have a fixed structure, and for taller medical staff, this process requires them to bend over for a long time, leading to lower back pain. Moreover, traditional injection stools are only for one-way use. When injecting medication into the joint of different knees, medical staff need to move around the injection stool to the other side, which is inconvenient for medical staff to quickly inject the patient. Based on this, we propose an injection stool that is height-adjustable and can be used in both directions. Utility Model Content

[0003] The purpose of this invention is to provide a bidirectional knee joint intra-articular injection stool, which aims to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a bidirectional knee joint intracavitary injection stool, comprising a base plate, legs mounted on the bottom end of the base plate, four support columns mounted on the top end of the base plate, an inwardly extending mounting cavity opened on the top of each support column, a baffle plate installed between two adjacent support columns, an electric servo push rod installed on the top end of the base plate between two baffle plates, a seat cushion installed on the top end of the electric servo push rod, and strip grooves penetrating the mounting cavities opened on opposite sides of two support columns on the same side, and guide components installed in the two mounting cavities on the same side, the guide components being connected to the bottom end of the seat cushion;

[0005] The guide assembly includes guide rods that are respectively inserted into two mounting cavities located on the same side. The surfaces of the two guide rods are each fitted with a connecting shaft in a strip groove. A pedal is rotatably mounted between the two connecting shafts. A support rod is also installed between the two guide rods. A fixing groove is provided at the bottom end of the pedal.

[0006] As a preferred technical solution of this utility model, the seat cushion includes a fixed plate, the guide rod is fixedly installed at the bottom end of the base plate, the telescopic end of the electric servo push rod is fixedly connected to the bottom end of the fixed plate, and a soft pad is installed at the top end of the fixed plate.

[0007] As a preferred technical solution of this utility model, the surfaces of the two guide rods on the same side are respectively equipped with a first magnetic plate. The first magnetic plate extends to the outside through the strip groove. A second magnetic plate is embedded at the top corner of the pedal. When the pedal is rotated to a vertical position, the first magnetic plate and the second magnetic plate are in corresponding positions and are connected by magnetic attraction.

[0008] As a preferred technical solution of this utility model, the support rod is a columnar structure, the fixing groove is an arc-shaped groove, the curvature of the fixing groove matches the surface curvature of the support rod, and the support column is located in the arc-shaped groove when the pedal is rotated to a horizontal position.

[0009] As a preferred technical solution of this utility model, the size of the guide rod matches the size of the mounting cavity.

[0010] As a preferred technical solution of this utility model, two controllers are installed on the top of the base plate. The two controllers are located between the two baffles and on both sides of the electric servo push rod. The surface of the controller is provided with an extension button and a retraction button. The two controllers are electrically connected to the electric servo push rod and are arranged in parallel.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: the electric servo push rod can adjust the height of the seat, so that taller medical staff can perform injections without excessive bending over and causing back pain. In addition, the pedal can support the patient's feet when they cannot touch the bottom surface. Furthermore, the patient can choose to sit on the seat cushion from the left or right side of the bottom plate depending on the side of the knee joint to be injected, thus enabling medical staff to perform intra-knee joint injections without adjusting their own position, effectively improving injection efficiency. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a structural schematic diagram of the base plate, support column, and electric servo push rod of this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the seat cushion in this utility model;

[0016] Figure 4 This is a cross-sectional structural diagram of the guide component in this utility model;

[0017] Figure 5 This is a schematic diagram of the guide component in this utility model.

[0018] In the diagram: 1. Base plate; 2. Support leg; 3. Support column; 4. Mounting cavity; 5. Baffle; 6. Electric servo push rod; 7. Seat cushion; 71. Fixing plate; 72. Soft pad; 8. Strip groove; 9. Guide assembly; 91. Guide rod; 92. Pedal; 93. Support rod; 94. Fixing groove; 95. First magnetic suction plate; 96. Second magnetic suction plate; 10. Controller. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-5 The present invention provides the following technical solution: a bidirectional knee joint cavity injection stool, including a base plate 1, a support leg 2 installed at the bottom end of the base plate 1, four support columns 3 installed at the top end of the base plate 1, an inwardly extending mounting cavity 4 opened at the top of the support column 3, wherein a baffle 5 is installed between two adjacent support columns 3, an electric servo push rod 6 is installed at the top end of the base plate 1 between two baffles 5, a seat cushion 7 is installed at the top end of the electric servo push rod 6, and a strip groove 8 penetrating the mounting cavity 4 is opened on the opposite side of two support columns 3 on the same side, and a guide component 9 is installed in the two mounting cavities 4 on the same side, and the guide component 9 is connected to the bottom end of the seat cushion 7.

[0021] In this embodiment, the guide assembly 9 includes guide rods 91 that are respectively inserted into two mounting cavities 4 located on the same side. The surfaces of the two guide rods 91 are each mounted with a connecting shaft in the strip groove 8. A pedal 92 is rotatably mounted between the two connecting shafts. A support rod 93 is also mounted between the two guide rods 91. A fixing groove 94 is provided at the bottom end of the pedal 92.

[0022] Specifically, when the seat cushion 7 is raised by the electric servo push rod 6, the rise and fall of the seat cushion 7 is made more stable under the action of the guide rod 91. Moreover, for patients with shorter legs, the feet are suspended in the air after the seat cushion 7 is raised, which makes it inconvenient for medical staff to inject drugs into the knee joint. However, by rotating the pedal 92, the support rod 93 and the fixing groove 94 support the bottom end of the pedal 92, so that the patient's feet can be supported by the pedal 92, which makes it easier for medical staff to inject drugs into the patient's knee joint.

[0023] In this embodiment, the seat cushion 7 includes a fixing plate 71, a guide rod 91 is fixedly installed at the bottom end of the base plate 1, the telescopic end of the electric servo push rod 6 is fixedly connected to the bottom end of the fixing plate 71, and a soft pad 72 is installed at the top end of the fixing plate 71.

[0024] Specifically, the cushion 72 can improve the patient's comfort when sitting on the injection stool.

[0025] In this embodiment, the surfaces of the two guide rods 91 located on the same side are each equipped with a first magnetic plate 95. The first magnetic plate 95 extends outward through the strip groove 8. A second magnetic plate 96 is embedded at the top corner of the pedal 92. When the pedal 92 is rotated to a vertical position, the first magnetic plate 95 and the second magnetic plate 96 are positioned correspondingly and connected by magnetic attraction.

[0026] Specifically, when the patient's feet can be supported by the base plate 1 or when the injection stool is idle, the pedal 92 can be flipped so that the pedal 92 is in a vertical state. At this time, the pedal 92 can be fixed by the action of the first magnetic plate 95 and the second magnetic plate 96, so that the pedal 92 is fixed in a vertical position. Then the pedal 92 can be flipped and stored, while avoiding the pedal 92 from spreading out and affecting the patient's injection.

[0027] In this embodiment, the support rod 93 is a columnar structure, and the fixing groove 94 is an arc-shaped groove. The curvature of the fixing groove 94 matches the surface curvature of the support rod 93. When the pedal 92 is rotated to a horizontal position, the support column 3 is located in the arc-shaped groove.

[0028] Specifically, when the seat cushion 7 is raised so that the patient's feet are suspended in the air, the pedal 92 can be flipped down and supported by the support rod 93 and the fixing groove 94, so that the pedal 92 is in a horizontal state, which makes it easier to support the patient's feet and makes it easier for medical staff to inject drugs into the patient's knee joint cavity.

[0029] In this embodiment, the dimensions of the guide rod 91 are matched with the dimensions of the mounting cavity 4.

[0030] Specifically, this method can improve the stability of seat cushion 7's lifting and lowering.

[0031] In this embodiment, two controllers 10 are installed on the top of the base plate 1. Both controllers 10 are located between the two baffles 5 and on both sides of the electric servo push rod 6. The surface of the controller 10 is provided with an extension button and a retraction button. Both controllers 10 are electrically connected to the electric servo push rod 6 and are arranged in parallel.

[0032] Specifically, since the two controllers 10 are set in parallel, medical staff can control the operation of the electric servo push rod 6 through the corresponding controller 10, whether they are on the front or back of the base plate 1.

[0033] Working principle: With two controllers 10, medical personnel can control the operation of the electric servo push rod 6 regardless of whether they are positioned in front of or behind the base plate 1. Patients can choose a suitable orientation to sit on the seat cushion 7 based on the location of the medical personnel and the side of the affected limb requiring injection. For example, if the medical personnel are behind the base plate 1 and the patient's left knee needs injection, the patient can sit on the seat cushion 7 from the right side of the base plate 1. In this position, the patient's left knee is directly on the side of the medical personnel, eliminating the need for the medical personnel to adjust their position and improving injection efficiency. The electric servo push rod 6, in conjunction with the guide assembly 9, ensures… The height of the seat cushion 7 is adjustable, allowing taller medical staff to inject without excessive bending, effectively reducing lower back pain. Furthermore, if the patient's feet are dangling before injection, the footrest 92 provides support, making it easier to inject into the knee joint. This injection stool has a simple structure and high functionality. It not only effectively reduces lower back pain caused by excessive bending, but also allows patients to sit on the stool from two directions, eliminating the need for medical staff to move to inject into the corresponding knee joint, thus improving injection efficiency.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bidirectional knee joint intra-articular injection stool, comprising a base plate (1), wherein a support leg (2) is mounted on the bottom end of the base plate (1), characterized in that: Four support columns (3) are installed at the top of the base plate (1). The top of the support column (3) has an inwardly extending mounting cavity (4). A baffle (5) is installed between two adjacent support columns (3). An electric servo push rod (6) is installed at the top of the base plate (1) between the two baffles (5). A seat cushion (7) is installed at the top of the electric servo push rod (6). A strip groove (8) that passes through the mounting cavity (4) is opened on the opposite side of the two support columns (3) on the same side. A guide assembly (9) is installed in the two mounting cavities (4) on the same side. The guide assembly (9) is connected to the bottom end of the seat cushion (7). The guide assembly (9) includes guide rods (91) that are respectively inserted into two mounting cavities (4) located on the same side. The surfaces of the two guide rods (91) are each mounted with a connecting shaft in the strip groove (8). A pedal (92) is rotatably mounted between the two connecting shafts. A support rod (93) is also mounted between the two guide rods (91). A fixing groove (94) is provided at the bottom end of the pedal (92).

2. The bidirectional knee joint intra-articular injection stool according to claim 1, characterized in that: The seat cushion (7) includes a fixing plate (71), the guide rod (91) is fixedly installed at the bottom end of the base plate (1), the telescopic end of the electric servo push rod (6) is fixedly connected to the bottom end of the fixing plate (71), and a soft pad (72) is installed on the top end of the fixing plate (71).

3. The bidirectional knee joint intra-articular injection stool according to claim 1, characterized in that: The surfaces of the two guide rods (91) on the same side are each equipped with a first magnetic plate (95). The first magnetic plate (95) extends to the outside through the strip groove (8). A second magnetic plate (96) is embedded at the top corner of the pedal (92). When the pedal (92) is rotated to a vertical position, the first magnetic plate (95) and the second magnetic plate (96) are in corresponding positions and are connected by magnetic attraction.

4. The bidirectional knee joint intra-articular injection stool according to claim 1, characterized in that: The support rod (93) is a columnar structure, the fixing groove (94) is an arc-shaped groove, the curvature of the fixing groove (94) matches the surface curvature of the support rod (93), and the support column (3) is located in the arc-shaped groove when the pedal (92) is rotated to a horizontal position.

5. The bidirectional knee joint intra-articular injection stool according to claim 1, characterized in that: The dimensions of the guide rod (91) are matched with the dimensions of the mounting cavity (4).

6. The bidirectional knee joint intra-articular injection stool according to claim 1, characterized in that: Two controllers (10) are installed on the top of the base plate (1). The two controllers (10) are located between the two baffles (5) and on both sides of the electric servo push rod (6). The surface of the controller (10) is provided with an extension button and a retraction button. The two controllers (10) are electrically connected to the electric servo push rod (6) and are connected in parallel.